content: /*
   * Copyright 2017 David Karnok
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package hu.akarnokd.reactive4javaflow.impl.operators;
  
  import hu.akarnokd.reactive4javaflow.*;
  import org.junit.Test;
  
  import java.io.IOException;
  import java.util.concurrent.TimeUnit;
  
  public class FolyamRetryWhenTest {
  
      @Test
      public void standard() {
          TestHelper.assertResult(
                  Folyam.range(1, 5)
                  .retryWhen(h -> h),
                  1, 2, 3, 4, 5
          );
      }
  
  
      @Test
      public void standardHidden() {
          TestHelper.assertResult(
                  Folyam.range(1, 5).hide()
                          .retryWhen(h -> h),
                  1, 2, 3, 4, 5
          );
      }
  
      @Test
      public void standard2() {
          TestHelper.assertResult(
                  Folyam.defer(() -> {
                      int[] c = { 0 };
                      return Folyam.defer(() -> {
                          Folyam<Integer> f = Folyam.range(1, 5);
                          if (c[0]++ < 2) {
                              f = f.concatWith(Folyam.error(new IOException()));
                          }
                          return f;
                      })
                      .retryWhen(h -> h);
                  }),
                  1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5
          );
      }
  
      @Test
      public void becomeEmpty() {
          TestHelper.assertResult(
                  Folyam.error(new IOException()).retryWhen(h -> {
                      int[] c = { 0 };
                      return h.takeWhile(v -> c[0]++ < 2);
                  }));
      }
  
      @Test
      public void error() {
          TestHelper.assertFailureComposed(-1,
                  f -> f.retryWhen(h -> {
                      int[] c = { 0 };
                      return h.takeWhile(v -> {
                          if (c[0]++ < 2) {
                              return true;
                          }
                          throw v;
                      });
                  }), IOException.class);
      }
  
      @Test
      public void retryPass2() {
          TestConsumer<Integer> ts = new TestConsumer<>(0);
  
          int[] c = { 0 };
  
          Folyam.defer(() -> {
              Folyam<Integer> f = Folyam.range(1, 5);
              if (c[0]++ < 2) {
                  f = f.concatWith(Folyam.error(new IOException()));
              }
              return f;
          })
                  .retryWhen(h -> h)
                  .subscribe(ts);
  
          Integer[] values = { 1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5 };
          for (int i = 0; i < values.length; i++) {
              ts.requestMore(1)
                      .awaitCount(i + 1, 10, 5000)
                      .assertValueCount(i + 1)
              ;
          }
  
          ts.awaitDone(5, TimeUnit.SECONDS)
                  .assertResult(values);
      }
  
      @Test
      public void handlerCrash() {
          Folyam.range(1, 5)
                  .retryWhen(h -> { throw new IOException(); })
                  .test()
                  .assertFailure(IOException.class);
      }
  
  
      @Test
      public void immediateError() {
          TestHelper.assertFailureComposed(5,
                  f -> f.retryWhen(v -> Folyam.error(new IOException())), IOException.class);
      }
  
      @Test
      public void immediateComplete() {
          TestHelper.assertResult(
                  Folyam.range(1, 5)
                          .retryWhen(h -> Folyam.empty())
          );
      }
  
      @Test
      public void unrelated() {
          Folyam.range(1, 5).concatWith(Folyam.error(new IOException()))
                  .retryWhen(h -> Folyam.range(1, 2))
                  .test()
                  .assertResult(1, 2, 3, 4, 5, 1, 2, 3, 4, 5);
      }
  
  
      @Test
      public void unrelatedConditional() {
          Folyam.range(1, 5).concatWith(Folyam.error(new IOException()))
                  .retryWhen(h -> Folyam.range(1, 2))
                  .filter(v -> true)
                  .test()
                  .assertResult(1, 2, 3, 4, 5, 1, 2, 3, 4, 5);
      }
  
      @Test
      public void repeatAsyncSource() {
          Folyam.range(1, 5).concatWith(Folyam.error(new IOException()))
                  .subscribeOn(SchedulerServices.single())
                  .retryWhen(h -> {
                      int[] c = { 0 };
                      return h.takeWhile(v -> c[0]++ < 100);
                  })
                  .test()
                  .awaitDone(5, TimeUnit.SECONDS)
                  .assertValueCount(505)
                  .assertNoErrors()
                  .assertComplete();
      }
  
  }
  